5. As-Sidq -Truthfulness.
5.As-Sidq -Truthfulness. To witness the testimony with truthfulness in one's heart. He, who utters the testimony while his heart is not certain about its truthfulness is a lying hypocrite. Allah says, “and of mankind, there are some (hypocrites) who say, 'We believe in Allah and the Last Day' while in fact, they believe not. They (think to) deceive Allah and those who believe, while they only deceive themselves, and perceive (it) not! In their hearts is a disease (of doubt and hypocrisy) and Allah has increased their disease. A
painful torment is theirs because they used to lie.” [Soorah al-Baqarah (2): 8-10]